e8fb165a38ff14baef711d1a6c7b32760657e5d63180912819de125a1db909fa

General

Target

catalog-240736446.xls
Size

367KB
MD5

268a42021d538ca7841b16a223bd1085
SHA1

c35468d38c3fff9f929899b861cca27c9e600f38
SHA256

8606800ed23efe827bb5e2895e47cb815b2c6d0d7e836aad7ca36e2bd839846b
SHA512

9ad81acdbbe480497cbced8932269c6cc98bd294e954aca9fee70da02ef2f8784cf61361bcc758581f8f08cc9b66fc032a186d097255ed2b49b90912173e2f90

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exerundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2192	668	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2840	668	rundll32.exe	EXCEL.EXE

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

668 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
668	EXCEL.EXE
668	EXCEL.EXE
668	EXCEL.EXE
668	EXCEL.EXE
668	EXCEL.EXE
668	EXCEL.EXE
668	EXCEL.EXE
668	EXCEL.EXE
668	EXCEL.EXE
668	EXCEL.EXE
668	EXCEL.EXE
668	EXCEL.EXE
668	EXCEL.EXE
668	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 668 wrote to memory of 2192	668	EXCEL.EXE	rundll32.exe
PID 668 wrote to memory of 2192	668	EXCEL.EXE	rundll32.exe
PID 668 wrote to memory of 2840	668	EXCEL.EXE	rundll32.exe
PID 668 wrote to memory of 2840	668	EXCEL.EXE	rundll32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\catalog-240736446.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:668

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2192

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2840

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/668-114-0x00007FF732B50000-0x00007FF736106000-memory.dmp

Filesize
53.7MB

Download
memory/668-115-0x00007FFDB5990000-0x00007FFDB59A0000-memory.dmp

Filesize
64KB

Download
memory/668-116-0x00007FFDB5990000-0x00007FFDB59A0000-memory.dmp

Filesize
64KB

Download
memory/668-117-0x00007FFDB5990000-0x00007FFDB59A0000-memory.dmp

Filesize
64KB

Download
memory/668-118-0x00007FFDB5990000-0x00007FFDB59A0000-memory.dmp

Filesize
64KB

Download
memory/668-119-0x00007FFDB5990000-0x00007FFDB59A0000-memory.dmp

Filesize
64KB

Download
memory/668-122-0x00007FFDD5E00000-0x00007FFDD6EEE000-memory.dmp

Filesize
16.9MB

Download
memory/668-123-0x0000023EE0380000-0x0000023EE2275000-memory.dmp

Filesize
31.0MB

Download
memory/2192-179-0x0000000000000000-mapping.dmp

Download
memory/2840-180-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads